GREAT hole saw for the price If you're the type of person who wants to add 120mm fans to various projects then you need this hole saw. While not 120mm, anything available in the US other than 120mm isn't that good for the price (and a slightly smaller size looks better - then the fan will cover all areas of the cutout). I did a clean job on my steel computer case to add a top fan (see photo - intentionally misaligned due to motherboard/case) and did a great job with the case my computer fits in. Used with a Ryobi 18V cordless drill for both projects and ran at a higher speed. The saw rotated correctly and was very sharp - be careful with it (my Milkwaukee saws aren't that sharp!).